This is a suggestion that a display be available that is like the "colonies" display (which is not implemented yet).  However, the title would be "systems".

A "system" is a collection of planets (and perhaps starbases) that is based on a shipyard.   Each  planet which is connected to a shipyard is a part of the system.

Starbases exerting influence over these planets/shipyard might also be included.

Systems might be able to be named to help recognition (the name would be associated with the shipyard).

The most important listing for System X would all of the ships garrisoned on the planets, starbases, and shipyard in the system.  This listing might be just the numbers of ships in each category:   tiny, small, mediium, etc.   Perhaps another column for non-combat ships.

What is the point?  I have been playing on huge systems with occ/com/com as my choices.   Lots of planets, lotsa stuff.   At present, I can either read done the list of individual starships and try to remember where they are and also whether certain systems are ungarrisoned (yes there is a symbol in the colony list but it doesn't say how many starships).  Or more likely I will click on one planets and starbase and shipyard to figure out where everything is, very tedious.   

Even if one only plays in a less dense galaxy, a single colony will potentially have starbases and a shipyard.   Click multiple times to see what's there.

This is just a general idea and if it has any merit needs a substantial amount of refining, of course.

What do you think?   The idea comes because gc3 is based on shipyards that are distinct from colonies.